Mirolotmia dinocephala, Gorochov, 2021

Mirolotmia dinocephala View in CoL sp. nov.

( Figs 1–10)

Holotype. Male; Indonesia, West Papua Prov., Raja Ampat Archipelago , Waigeo I., forest in environs of Saporkren Vill., 4–16.XII.2017, M. Mironov & E. Lotmentseva leg.

Paratypes. Four females, same data as for holotype .

Description. Male ( holotype). Body shining, with following coloration ( Figs 1–3): head dark brown with slightly lighter (brown) median band running from median ocellus to clypeal suture, small area located behind this ocellus (in contact with above-mentioned band) and connected with lateral ocelli by a pair of short transverse stripes, four poorly distinct longitudinal stripes on dorsum situated behind eyes and previous area, scapes and mouthparts (except for dark brown dorsolateral areas on mandibles and yellowish palpi), with greyish eyes, and with light brown ocelli and remainder of antennae; pronotum dark brown with a pair of brown spots on disc; tegmina with brown basal area, distal part of dorsal field (including mirror) and band on lateral field along its dorsal margin, with transparent remainder of dorsal field, with almost whitish band on lateral field along its ventral margin, and with greyish remainder of this field having darker (brown) venation; legs light brown with transparent tympanic membranes, brown to dark brown distal areas on all femora, and brown numerous oblique lines on outer and dorsal surfaces of remainder of hind femur; abdominal tergites, anal plate and paraprocts brown; venter of body and cerci light brown but with a pair of almost brown spots on lateral parts of genital plate.

Median ocellus distinct, transverse and narrow; lateral ocelli medium-sized, round; all ocelli located in corners of strongly transverse triangle ( Figs 1 and 2). Tegmina reaching sixth abdominal tergite, with dorsal field truncately rounded in apical part and having 3–4 oblique veins, and with 8–9 longitudinal veins in lateral field ( Figs 2 and 3). Outer tympanum almost 3.2 times as long as wide and approximately 1.2 times as long as maximum width of fore tibia in place where tympanum located. Hind tibia with five pairs of dorsal articulated spines (inner spines somewhat longer than outer ones; proximal spines distinctly shorter than distal ones), with dorsal inner (apical) spur longest and reaching middle third of hind basitarsus, with middle inner spur slightly shorter, with dorsal and middle outer spurs medium-sized, and with two ventral spurs shortest (slightly shorter than longest spines of this tibia). Hind basitarsus with four inner and six outer dorsal denticles as well as with inner spur almost reaching middle of apical tarsal segment and approximately twice as long as outer spur ( Fig. 3). Genital plate almost 1.5 times as long as anal plate. Genitalia as in Figs 7–10.

Female. General appearance as in male, but head slightly smaller (narrower) and with barely less convex median part of anterior epicranial surface as well as with somewhat more distinct ornament ( Figs 4–6), tegmina reaching second or third abdominal tergites and having 9–11 longitudinal veins in dorsal field and 7–8 longitudinal veins in lateral field ( Figs 5 and 6), and anal plate almost 1.5 times as long as genital plate. Ovipositor somewhat shorter than hind femur ( Fig. 6).

Length (mm). Body: male 24, female 19–24; pronotum: male 4, female 3.5–4; tegmina: male 9, female 5–6; hind femora: male 15, female 12.5– 15.5; ovipositor 9–12.

Etymology. The name of this species is a Latinised adjective composed of the Ancient Greek words δεινός [ dinos], “terrible”, and κεφαλή [ cephala], “head”.